Vitamin C is thought to increase the production of white blood cells, which are key to fighting infections. Almost all citrus fruits are high in vitamin C. With such a variety to choose from, it's easy to add a squeeze of this vitamin to any meal.
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1. Citrus fruits
grapefruit.
oranges.
clementines.
tangerines.
lemons.
limes.
...
1. Citrus fruits
grapefruit.
oranges.
clementines.
tangerines.
lemons.
limes.